Liindastering tsa peterole le lik'hemik'hale, tlhokahalo ea thepa e ka tšeptjoang le e tšoarellang ke ea bohlokoa. Kena fluoroelastomers , sehlopha sa rabara ea maiketsetso e fetohileng karolo ea bohlokoa lits'ebetsong tse fapaneng ka har'a liindasteri tsena. Empa hantle-ntle li-fluoroelastomers ke eng, 'me ke hobane'ng ha li fumana botumo bo joalo?
Fluoroelastomers ke mofuta oa elastomer e bonts'ang khanyetso e ikhethang mochesong, lik'hemik'hale le maemo a leholimo a feteletseng. Li entsoe ka motsoako oa li-fluoropolymers le elastomers, tse hlahisang thepa e ka mamellang maemo a thata le lik'hemik'hale tse mabifi habonolo. Thepa ea bona e ikhethang e etsa hore e be e loketseng ho sebelisoa ho li-seal, li-gaskets, li-O-rings le likarolo tse ling tsa bohlokoa ho lisebelisoa tsa peterole le tsa lik'hemik'hale.
Ts'ebeliso ea li-fluoroelastomers indastering ea peterole le ea lik'hemik'hale e kholo ebile e fapane. Ho tloha libakeng tse hloekisang oli ho ea ho limela tsa lik'hemik'hale, li-fluoroelastomers li bapala karolo ea bohlokoa ho netefatsa polokeho le ts'epahalo ea ts'ebetso. Hangata li sebelisoa lits'ebetsong tsa ho tiisa, moo li fanang ka khanyetso e ntle ho lik'hemik'hale tse senyang, mocheso o phahameng le khatello. Ho feta moo, li-fluoroelastomers li sebelisoa ka har'a li-tubing, li-hoses le lisebelisoa tsa masela, tse fanang ka khanyetso e phahameng ho mefuta e mengata e fapaneng ea lik'hemik'hale le mafura.
E 'ngoe ea melemo ea mantlha ea li-fluoroelastomers ho feta lisebelisoa tse ling ke khanyetso ea tsona e ikhethang ea lik'hemik'hale. Li ka mamella ho pepesehela lintho tse matla tse kang li-acids, solvents, le libeso, ntle le ho senyeha kapa ho lahleheloa ke ts'ebetso. Sena se ba etsa khetho e nepahetseng bakeng sa lits'ebetso moo ho lumellana ha lik'hemik'hale ho leng bohlokoa.
Leha ho le joalo, li-fluoroelastomers ha li na mathata le mefokolo ea tsona. Le hoja li ipabola libakeng tse ngata, li ka bitsa chelete e ngata ha li bapisoa le li-elastomer tse ling. Litsenyehelo tsa bona tse phahameng li ka amahanngoa le mokhoa o rarahaneng oa tlhahiso le lisebelisoa tse khethehileng tse sebelisoang ha li etsoa. Ho feta moo, li-fluoroelastomers li kanna tsa se tšoanelehe bakeng sa lits'ebetso tse hlokang ho feto-fetoha ha maemo a mocheso o tlase, kaha li atisa ho satalla le ho lahleheloa ke elasticity maemong a batang haholo.
Sengoliloeng sena, re tla kenella ka botebo lefats'eng la fluoroelastomers, re hlahlobe thepa ea bona, lits'ebetso, melemo, hammoho le liphephetso le mefokolo eo ba e hlahisang. Ka ho utloisisa karolo ea li-fluoroelastomers indastering ea peterole le ea lik'hemik'hale, litsebi le ba etsang liqeto ba ka etsa liqeto tse nang le tsebo ha ho tluoa tabeng ea ho khetha lisebelisoa tse loketseng litlhoko tsa bona tse khethehileng.
Li-Fluoroelastomers ke eng?
Fluoroelastomers, e tsejoang hape e le FKM (fluorocarbon) elastomers, ke mofuta oa rabara ea maiketsetso e fanang ka khanyetso e ikhethang mochesong, lik'hemik'hale le maro a fapaneng. Li-elastomer tsena li sebelisoa haholo liindastering moo ho hlokahalang litiiso le li-gaskets tse sebetsang hantle, joalo ka likoloi, sebaka sa sefofane le ts'ebetso ea lik'hemik'hale.
E 'ngoe ea likarolo tsa bohlokoa tsa fluoroelastomers ke bokhoni ba tsona ba ho mamella mocheso o feteletseng. Li ka sebetsa ka katleho mochesong oa ho tloha ho -30 ° C ho ea ho 250 ° C (-22 ° F ho ea 482 ° F), e leng se etsang hore e be tse loketseng bakeng sa lisebelisoa tse kenyelletsang mocheso o phahameng le libaka tse thata. Ho hanyetsa mocheso o tsotehang ho lumella li-fluoroelastomers ho boloka bokhoni ba tsona ba ho tiisa le ho thibela ho lutla le tlas'a maemo a feteletseng.
Ntho e 'ngoe e hlokomelehang ea li-fluoroelastomers ke khanyetso ea tsona e ntle ea lik'hemik'hale. Li khona ho mamella ho pepesehela mefuta e mengata ea lik'hemik'hale, ho kopanyelletsa le li-acids, li-bases, libeso, lihlapolli le oli. Khanyetso ena ea lik'hemik'hale e etsa hore fluoroelastomers e be khetho e ratoang bakeng sa litiiso le li-gaskets liindastering moo ho kopana le maro a mabifi ho tloaelehileng.
Ntle le ho hanyetsa mocheso le lik'hemik'hale, li-fluoroelastomers li boetse li bontša khanyetso e ikhethang ea ho tsofala le ho senyeha. Li na le bophelo bo bolelele ba ts'ebeletso 'me li khona ho mamella ho pepesetsoa nako e telele mahlaseling a UV, ozone le boemo ba leholimo ntle le ho senyeha. Ho tšoarella hona ho lumella li-fluoroelastomers ho boloka ts'ebetso ea tsona ea ho tiisa ka nako e telele, ho fokotsa tlhoko ea ho nkela sebaka khafetsa le ho fokotsa nako ea ho theoha.
Ho feta moo, li-fluoroelastomers li fana ka khanyetso e ntle ea compression set, ho bolelang hore li ka boloka sebopeho sa tsona sa mantlha le thepa ea ho tiisa le kamora ho hatelloa nako e telele. Tšobotsi ena e bohlokoa bakeng sa lits'ebetso moo elastomer e lulang e le tlas'a khatello, ho netefatsa tiiso e tšepahalang le e sa luleng.
Likopo tsa Fluoroelastomers ho Petroleum le Chemical Industries
Li-fluoroelastomers li ipakile li le bohlokoa haholo indastering ea peterole le ea lik'hemik'hale ka lebaka la thepa ea tsona e ikhethang le ho hanyetsa maemo a thata. Lisebelisoa tsena tse feto-fetohang li fumane lits'ebetso tse ngata, ho netefatsa ts'ebetso le polokeho ea lits'ebetso tse fapaneng liindastering tsena.
Tšebeliso e 'ngoe e hlahelletseng ea li-fluoroelastomers ke lits'ebetsong tsa ho tiisa. Sebopeho se ikhethileng sa lik'hemik'hale tsa fluoroelastomers se li lumella ho mamella mocheso o feteletseng, lik'hemik'hale tse mabifi le likhatello tse phahameng. Sena se etsa hore e be tse loketseng ho sebelisoa ho li-gaskets, O-rings le likarolo tse ling tsa ho tiisa tse bohlokoa ho thibela ho lutla le ho boloka botsitso ba lisebelisoa le lits'ebetso. Ka ho sebelisa li-fluoroelastomers, liindasteri li ka netefatsa ho ts'epahala le ho phela halelele ha lits'ebetso tsa tsona tsa ho tiisa, ho fokotsa kotsi ea ho theola chelete e ngata le likotsi tsa tikoloho.
Ho feta moo, li-fluoroelastomers li sebelisoa haholo tlhahiso le ho sebetsana le lihlahisoa tsa oli le lik'hemik'hale. Li-elastomer tsena li ipabola tikolohong e senyang, li etsa hore li tšoanelehe ho sebelisoa lipompong, li-valve le lits'ebetsong tsa lipeipi. Ho hanyetsa ha tsona lihlapolli, libeso, li-acid le lintho tse ling tse mabifi ho tiisa hore metsi le lik'hemik'hale li tsamaisoa ka tsela e thellang le ka tsela e atlehileng. Khanyetso e ikhethang ea lik'hemik'hale ea fluoroelastomers e kenya letsoho ho thibeleng ho lutla, tšilafalo, le ho hloleha ha lisebelisoa, ho netefatsa polokeho le boleng ba lihlahisoa tse ntseng li sebetsoa kapa tse tsamaisoang.
Ntle le khanyetso ea bona ea lik'hemik'hale, li-fluoroelastomers li boetse li bonts'a ho hanyetsa mocheso o babatsehang. Thepa ena e etsa hore e be ea bohlokoa haholo lits'ebetsong moo mocheso o phahameng o kopanang le ona, joalo ka ho hloekisoa ha peterole kapa tlhahiso ea lik'hemik'hale. Li-Fluoroelastomers li khona ho mamella mocheso o ka holimo ho likhato tse 200 tsa Celsius ntle le ho lahleheloa ke thepa ea tsona ea mochini kapa ho theola seriti. Bokhoni bona bo lumella liindasteri ho sebetsa ka mocheso o phahameng, ho ntlafatsa ts'ebetso ea ts'ebetso le tlhahiso.
Lintho tse ikhethang tsa fluoroelastomers le tsona li atoloha ho hanyetsa botsofali le ho senyeha. Lisebelisoa tsena li na le nako e telele ea tšebeletso, esita le ha li pepesehile libakeng tse thata ka nako e telele. Ho tšoarella hona ho tiisa nako e telele ea lisebelisoa le ho fokotsa tlhokahalo ea ho nkeloa sebaka khafetsa, ho fella ka ho boloka litšenyehelo bakeng sa liindasteri.
Melemo ea Fluoroelastomers ho feta lisebelisoa tse ling
Fluoroelastomers, eo hape e tsejoang e le FKM, ke mofuta oa rabara ea maiketsetso e fanang ka melemo e mengata ho feta lisebelisoa tse ling. Lik'hemik'hale tsena tse ikhethang li atile liindasteri tse fapaneng ka lebaka la thepa ea tsona e ikhethang le ts'ebetso ea tsona maemong a boima.
E 'ngoe ea melemo ea bohlokoa ea li-fluoroelastomers ke ho hanyetsa ha tsona lik'hemik'hale le mocheso o feteletseng. Ho fapana le lisebelisoa tse ling, li-fluoroelastomers li khona ho mamella mefuta e mengata ea lik'hemik'hale tse senyang, ho kenyeletsoa li-acids, libeso le li-solvents. Sena se li etsa hore li tšoanelehe haholo bakeng sa lits'ebetso tsa indasteri ea likoloi, sefofane, le lik'hemik'hale.
Ntle le khanyetso ea bona ea lik'hemik'hale, li-fluoroelastomers li bonts'a botsitso bo tsotehang ba mocheso. Ba ka boloka botšepehi le ts'ebetso ea bona esita le mocheso o phahameng, ho feta bokhoni ba li-elastomers tse tloaelehileng. Sena se etsa hore e be tse loketseng bakeng sa tšebeliso ea li-seal, gaskets, le O-rings lits'ebetsong moo ho pepesehela mocheso ho amehang.
Ho feta moo, li-fluoroelastomers li na le thepa e ikhethang ea mochini, ho kenyelletsa le matla a phahameng a ho tsieleha le ho hanyetsa meokho. Sena se li nolofalletsa ho mamella maemo a mabifi le ho sebetsana ka thata, ho netefatsa hore li tšoarella le ho phela nako e telele. Ho mamella ha bona ho sete ea khatello, kapa bokhoni ba ho hlaphoheloa ka mor'a ho hatelloa, ho boetse ho ba khetholla ho lisebelisoa tse ling.
Monyetla o mong oa li-fluoroelastomers ke ho kenella ha khase e tlase. Thepa ena e ba etsa khetho e ntle ea ho koala lits'ebetso moo ho thibelang ho lutla ha khase kapa mokelikeli ho leng bohlokoa. Liindasteri tse kang oli le khase, meriana le phepelo ea lijo li itšetlehile ka li-fluoroelastomers ho boloka botšepehi ba litsamaiso tsa tsona le ho netefatsa boleng ba sehlahisoa.
Ho feta moo, li-fluoroelastomers li fana ka khanyetso e ntle khahlanong le ozone, boemo ba leholimo le mahlaseli a UV. Sena se etsa hore li tšoanelehe bakeng sa lits'ebetso tsa kantle tse pepesehetseng maemo a thata a tikoloho. Ho hanyetsa ha bona ho senyeha ho tiisa ts'ebetso ea nako e telele le ho fokotsa litšenyehelo tsa tlhokomelo.
Mathata le Mefokolo ea Fluoroelastomers
Fluoroelastomers , eo hape e tsejoang ka hore ke FKM, ke lisebelisoa tsa maiketsetso tse kang rabara tse nang le khanyetso e ntle mochesong, lik'hemik'hale le libeso. Thepa ena e ikhethang e etsa hore li-fluoroelastomer e be tse lakatsehang haholo liindastering tse fapaneng, ho kenyeletsoa likoloi, sefofane le tlhahiso ea lik'hemik'hale. Leha ho le joalo, ho sa tsotellehe melemo ea tsona e mengata, li-fluoroelastomers le tsona li tla le liphephetso le mefokolo ea tsona.
E 'ngoe ea liphephetso tse kholo tsa fluoroelastomers ke theko ea tsona e phahameng. Ha ho bapisoa le li-elastomer tse ling, joalo ka rabara ea nitrile kapa silicone, li-fluoroelastomers li batla li le tura ho li hlahisa. Sena se bakoa haholo ke ts'ebetso e rarahaneng ea tlhahiso le khaello ea lisebelisoa tse tala. Ka lebaka leo, fluoroelastomers e kanna ea se be khetho e sebetsang bakeng sa lits'ebetso tse sa tsotelleng litšenyehelo.
Khaello e 'ngoe ea li-fluoroelastomers ke maemo a tsona a fokolang a mocheso o tlase. Le hoja lisebelisoa tsena li bontša ho hanyetsa mocheso o phahameng haholo, li atisa ho thatafala 'me li lahleheloa ke elasticity ka mocheso o tlase haholo. Sena e ka ba tšitiso e kholo indastering moo ts'ebetso ea mocheso o tlase e leng bohlokoa, joalo ka sehatsetsi kapa lisebelisoa tsa cryogenic.
Ho feta moo, li-fluoroelastomers ha li na ho taboha le ho hana ha li bapisoa le li-elastomer tse ling. Sena se bolela hore ba ka 'na ba se ke ba mamella ho senyeha ho matla le ho taboha kapa matla a matla a mechine. Lits'ebetsong tseo ho tsona thepa e nang le likhohlano kapa tšusumetso e sa khaotseng, li-elastomer tse ling tse nang le khanyetso e ntle ea abrasion li ka ba tse loketseng haholoanyane.
Ho feta moo, fluoroelastomers e ka ba phephetso ho e sebetsa le ho e bopa. Viscosity ea bona e phahameng le phallo e tlase e etsa hore ho be thata ho fihlela libopeho tse rarahaneng kapa likarolo tse tšesaane tse nang le marako. Sena se ka beha moeli liindastering tse hlokang meralo e rarahaneng kapa e ikhethileng, joalo ka makala a elektroniki kapa lisebelisoa tsa bongaka.
Leha ho na le mathata le mefokolo ena, li-fluoroelastomers e ntse e le khetho e tsebahalang bakeng sa lits'ebetso tse ngata ka lebaka la botsitso ba tsona bo ikhethang ba mocheso le khanyetso ea lik'hemik'hale. Li sebelisoa haholo ho litiiso, li-gaskets, O-rings, le likarolo tse ling tsa ho tiisa tse hlokang ho tšepahala le ho tšoarella libakeng tse thata.
Qetello
Fluoroelastomers ke lisebelisoa tse tenyetsehang le tse tšepahalang bakeng sa ho tiisa lits'ebetso liindastering tse hlokang li-elastomer tse sebetsang hantle. Li fana ka khanyetso e ikhethang ea mocheso, khanyetso ea lik'hemik'hale, ho tšoarella, le khanyetso ea sete ea compression, e li etsang hore e be tse loketseng maemo a boima. Li phetha karolo ea bohlokoa indastering ea peterole le ea lik'hemik'hale, ho fana ka khanyetso ea lik'hemik'hale, ho hanyetsa mocheso, le ho tšoarella ha mekhoa ea ho tiisa, mekhoa ea tlhahiso le mekhoa ea lipalangoang. Fluoroelastomers e fana ka melemo e mengata ho feta lisebelisoa tse ling, ho kenyelletsa ho hanyetsa lik'hemik'hale le mocheso o feteletseng, thepa e ikhethang ea mochini, ho kenella ha khase e tlase, le ho hanyetsa ozone le boemo ba leholimo. Leha ho le joalo, li boetse li tla le liphephetso le mefokolo e kang litšenyehelo tse phahameng, ho feto-fetoha ha maemo a fokolang a mocheso o fokolang, ho fokola ha meokho le abrasion, le mathata a ho sebetsa le ho bopa. Liindasteri li hloka ho nahana ka lintlha tsena ka hloko ha li khetha elastomer e loketseng bakeng sa lits'ebetso tsa tsona tse ikhethileng.
